The venture part is when you eat that junk off her back without using your hands
Descriptions vary from a complex excrement-enhanced onanistic act to a diving gear enhanced act of mutual ejaculate transfer.
Use of the term is generally only worth using speculatively, as the offer of a Rusty Venture generally leads to a night with mrs palm and her five lovely daughters
2) You're totally wrong, a Rusty Venture is when you push your elbow up her ******* and your **** down her throat. You then make a move like you're pumping up your bicycle and then you pull both out and **** in her ***.
3) IT'S A POOP HANDJOB!